What is T-Mobile US's current founding date?

2,004, dated January 1, 2004, from a primary source (sec.gov). The record asserts this claim as of November 11, 2026 (status valid, confidence 0.95).

organization · fact

T-Mobile US founding date

As of November 11, 2026, T-Mobile US's founding date on the AsOf record is 2,004, dated January 1, 2004, from a primary source (sec.gov).

T-Mobile US on another date · compare two dates

current founding date: 2,004January 1, 2004 · 1 source

Every dated value

1 value · 1 current

T-Mobile US founding date: every dated value on the record, oldest first, with its dates, status, confidence and sources
value	valid fromThe day the value took effect, not the day it was published. A period figure (a year's revenue) is dated at the period's end.More in About →	valid to	confidenceHow well the sources support the value, from 0 to 1. A single primary source is asserted from 0.7; nothing below 0.5 is asserted; a dead or disagreeing source lowers it.More in About →	sourcesPrimary: the entity's own filing, feed or site. Secondary: a publisher reporting it. Each claim links every source it has, with the passage that states the value where one was read.More in About →
2,004: founding date 2004 from 2004-01-01, claim clm_4ECDF5807212 and its sources to present · sec.gov	2004-01-01	present	0.95	sec.gov

Questions this record answers

What is T-Mobile US's current founding date?: 2,004, dated January 1, 2004, from a primary source (sec.gov). The record asserts this claim as of November 11, 2026 (status valid, confidence 0.95).

Answered from the rows above, as of November 11, 2026.

Cite T-Mobile US founding date

Each form names the value, its as-of date (2004-01-01), the day you read it (2026-11-11), the claim's stable URL and id and its primary source. The URL never changes: a superseded claim stays at the same address.

Plain text

AsOf. "T-Mobile US founded: 2004", as of 2004-01-01. Claim clm_4ECDF5807212, https://asof.is/claim/clm_4ECDF5807212, accessed 2026-11-11. Source: https://www.sec.gov/Archives/edgar/data/0001283699/000128369914000012/tmus12312013form10k.htm.

APA

AsOf. (2004). T-Mobile US founded: 2004 (as of 2004-01-01) [Record clm_4ECDF5807212]. Retrieved November 11, 2026, from https://asof.is/claim/clm_4ECDF5807212 (source: https://www.sec.gov/Archives/edgar/data/0001283699/000128369914000012/tmus12312013form10k.htm)

BibTeX

@misc{asof_clm_4ECDF5807212,
  author = {AsOf},
  title = {T-Mobile US founded: 2004},
  year = {2004},
  howpublished = {\url{https://asof.is/claim/clm_4ECDF5807212}},
  note = {Claim clm\_4ECDF5807212, as of 2004-01-01; source: https://www.sec.gov/Archives/edgar/data/0001283699/000128369914000012/tmus12312013form10k.htm},
  urldate = {2026-11-11}
}

Read on

/record/t-mobile-us/founded.md · this page as markdown
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/record/t-mobile-us · /timelines/t-mobile-us

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